The father has short eyelashes (a is a recessive autosomal gene), and the mother has long eyelashes (A is the dominant gene)
The father has short eyelashes (a is a recessive autosomal gene), and the mother has long eyelashes (A is the dominant gene), their three children have long eyelashes, and two have short. Identify the genotypes of the parents, as well as the genotypes of children with short eyelashes. Enter the answers in the table.
1. Since the offspring has a child with short eyelashes (aa), and the father has the aa genotype, the mother is Aa (the child with short eyelashes receives one gamete from the father, the other a from the mother)
2. Genotypes of parents: father – aa (short eyelashes), mother – Aa (long eyelashes). The maternal organism forms two types of gametes: A, a; paternal one type of gametes _ a
3. Genotype of three children with long eyelashes: Aa, genotype of two with short eyelashes – aa.
Answer: mother – Aa, father – aa, children – aa.